Packed in aluminium alloy case, with factorys certificate. (see following samples, as each set is different, the error of each weights is with small difference, but the error is within the maximum perssible errors of F1 weights).

M1 are with adjust bar (at the bottom of the weights), F1 are without. 1 set of F1 Grade 1mg-500g Stainless Steel Calibration Weight Kit(251047).

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The item "F1 Grade 1mg-500g Stainless Steel Scale Calibration Weight Kit Set w Certificate" is in sale since Wednesday, July 4, 2018. This item is in the category "Business & Industrial\Healthcare, Lab & Life Science\Lab Equipment\Lab Scales & Balances\Weights & Calibration Sets". The seller is "quickerseller36" and is located in Rancho Cucamonga, California. This item can be shipped to United States.